How to view all autocomplete options?
Okay I found an alternative situation. I wanted to make a dropdown menu that added all armature objects in the loaded file. My idea was for it to update every time an object is imported. I was able to achieve this based on dynamic list examples of this website:

https://elfnor.com/drop-down-and-button-select-menus-for-blender-operator-add-ons.html#dynamic-lists